Results 61 to 70 of about 988 (214)

A Structural Integrity Perspective for the Assessment of Ageing in Composite Solid Propellants

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 10, Page 152-158, October 2025.
ABSTRACT Composite solid propellants (CSPs) are critical materials in the defence and aerospace industries, known for their complex mechanical behaviour and susceptibility to ageing. This study explores the application of Principal Component Analysis (PCA) to discriminate the ageing degradation of CSPs based on structural integrity parameters.
Mario Martínez, Raúl López, Jesús Rodríguez, Alicia Salazar   +3 more
wiley   +1 more source

Probing the Curing Reaction of HTPB Propellant with Low-Field NMR

Aerospace
Hydroxyl-terminated polybutadiene (HTPB) propellants are widely used in aerospace applications owing to their excellent mechanical performance and storage stability, which are primarily governed by the crosslinked network formed during curing ...
Mengrui Yu, Heng Chang, Jinxiang Liu, Fei Wang, Wenhua Hu, Hua Zhang, Tianshuai Wang, Jiangbo Chen   +7 more
doaj   +1 more source

Comparison of burn rate and thermal decomposition of AP as oxidizer and PVC and HTPB as fuel binder based composite solid propellants

Defence Technology, 2019
In the present investigation an effort has been made to understand the thermal decomposition and burn rate characteristics of AP as oxidizer and PVC and HTPB as fuel binder in composite solid propellant.
A. Manash, P. Kumar
doaj   +1 more source

A Critical Review of Limitations and Challenges in Advancement of HNF as a Green Oxidizer for Composite Solid Propellant Formulations

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 7, Page 11-30, July 2025.
ABSTRACT Hydrazinium nitroformate (HNF) is a chlorine‐free, high‐energy oxidizer with promising applications in green propulsion systems. This review examines the thermal decomposition, combustion kinetics, flame structure, and behavior of HNF, while critically evaluating the current body of literature.
Lakshay Bansal, Prakhar Jindal, Vineet Kumar Rathi   +2 more
wiley   +1 more source

Moisture And Temperature Ageing On htpb Based Propellants Binder

Macromolecular Symposia, Volume 414, Issue 3, June 2025.
Abstract This study reports the impact of temperature, oxygen, and humidity ageing on the mechanical properties of a crosslinked hydroxy‐terminated polybutadiene (HTPB) network. Its mechanical behavior is described using a classical Mooney‐Rivlin model and shows a slight crosslinking reaction possibly due to oxidation of HTPB.
Théo Evrard, Julien Bonnet, Aude Vandenbroucke, Olivier Castelnau, Emmanuel Richaud   +4 more
wiley   +1 more source

Influence of AP Particle Size on Burning Characteristics of HMX/AP Propellants Supplemented with Fe2O3

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 6, June 2025.
ABSTRACT Nitramine propellants have attracted considerable attention in the domain of solid rockets and gun propulsion because of their energetic and smokeless features. Ammonium perchlorate (AP) is the widely used oxidizer in propellants owing to the excellent burning characteristics.
Makoto Kohga, Koichiro Urano, Hiroki Matsunaga   +2 more
wiley   +1 more source

AKTIVASI LITIUM SEBAGAI KATALISATOR PADA REAKSI PEMBENTUKAN HTPB

, 2004
HTPB usually used as propellant fuel binder. This paper studied anionic polymerization of butadiene to form HTPB (Hydroxy Terminated Polybutadiene) with litium as catalyst.
Geni Rosita, Heri Budi Wibowo
core  

Investigations of the mechanical response of dummy HTPB propellant grain under ultrahigh acceleration overload conditions using onboard flight-test measurements

Defence Technology
In this paper, to study the mechanical responses of a solid propellant subjected to ultrahigh acceleration overload during the gun-launch process, specifically designed projectile flight tests with an onboard measurement system were performed.
Yiming Zhang, Ningfei Wang, Weihua Ma, Ran Wang, Long Bai, Yi Wu   +5 more
doaj   +1 more source

Metal Oxides and Dichromate Salts Application as Burning Catalysts for the Modern Aluminized Ammonium Nitrate–Based Solid Propellants

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 6, June 2025.
ABSTRACT This study is devoted to the investigation of combustion characteristics of aluminized solid propellants (SPs) with ammonium nitrate (SP4, 44 wt.% and SP5, 66 wt.%), ammonium perchlorate (5 wt.%), and inert (butyl rubber) and active (polyvinyl tetrazole) binders.
Alexander Gromov, Konstantin Matrosov, Rezo Aliyev, Neel Kamal Gupta   +3 more
wiley   +1 more source

PERUBAHAN KARAKTERISTIK PEMBENTUKAN POLIURETAN BERBASIS HTPB DAN TDI BERDASARKAN KOMPOSISI REAKSI (CHANGES IN THE FORMATION CHARACTERISTICS OF POLYURETHANE BASED ON HTPB AND TDI REACTION COMPOSITION)

, 2016
Polyurethane formation occurs through crosslinking of a reaction between the hydroxyl group (OH) of HTPB and isocyanate (NCO) of TDI. Polymer network formation reaction will be formed from the linear bond and a combination of crosslinking.
Geni Rosita
core